Home / 136,458.30-188,326.32-76,038.78

Finding the Fourth Proportional to 136,458.30, 188,326.32 and 76,038.78

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Solution

The fourth proportional to 136,458.30, 188,326.32 and 76,038.78 is: 104,941.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,458.30 : 188,326.32 = 76,038.78 : x
  2. Step 2: Convert to fraction form
    136,458.30/188,326.32 = 76,038.78/x
  3. Step 3: Cross multiply
    136,458.30x = 188,326.32 × 76,038.78
  4. Step 4: Simplify right side
    136,458.30x = 14,320,103,614.69
  5. Step 5: Solve for x
    x = 14,320,103,614.69/136,458.30
  6. Step 6: Final answer
    x = 104,941.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.